Is there any way to increase the KVM?

Tz-Huan Huang tzhuan at
Wed Jun 4 06:17:54 UTC 2008

On Tue, Jun 3, 2008 at 9:53 PM, Pawel Jakub Dawidek <pjd at> wrote:
> On Sat, May 31, 2008 at 01:52:56PM +0800, Tz-Huan Huang wrote:
>> Hi,
>> Our nfs server is running 7-stable/amd64 with 8G ram, the size of zfs
>> pool is 12T. We have set vm.kmem_size and vm.kmem_size_max to
>> 1.5G, but the kernel still panics by "kmem_map too small" often.
> Could you also try to decrease vfs.zfs.arc_max?

The vfs.zfs.arc_max was set to 512M originally, the machine survived for
4 days and panicked this morning. Now the vfs.zfs.arc_max is set to 64M
by Oliver's suggestion, let's see how long it will survive. :-)


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